Tripcomputer with out pulse is that possible ???

[elg]

Ok, so here I stand, my micra has no injector, has no speed sensor.
And I want a tripcomputer in that car now !

At the junkyard, I got a tripcomputer from a Saab 9000, or five maybe...
Also got me a GM injectionsystem from a 1.3L engine complete with sensors.

The micra was customized and I supplied:
TPS, MAP, RPM and WAT besides that I let a injector laydown to simulate.

Tapped speed at the original micra speedometer. And fuel at the simulator injector.
Everything worked, I got values at the Saab computer and as a acc. it went up and in coasting got down.
BUT !
The difference in total after a couple km was not that big, this was a mess.:mad:

So now I had orderd a flowsensor just as I planned in the begining. :o

Total cost for all junkparts: 60 USD

Cost for one flowsensor: 80 USD

Like all the time, you loose cash...

// elg

[Diemaster]

the Zemco was a non-FI trip computer and included all it's own sensors including flow, speed, in,out temp, and a cruse control functon. the only thing it didnt have that the scangauge does is instanious mpg.

i've seen them on ebay b4. i just wish in my pre driving stupid days i hadent riped apart my dads :(

[elg]

Took a bosch airflow sensor, put it before air intake at the micra.

1.3V at engine off.
1.9V idle.

70km/h 2.4V, 90km/h 2.70, all these data is relative and not absolute.

The airflow was the same if I go in 4:th or 5:th gear, strange...Should have some kind of simpel logfunction. I´ll get there with an USB card soon.

I will keep this in the micra for a couple of days and really work it out.

Fuelsensor is yet to come.

// elg

[Matt Timion]

heh.. I love this picture:

http://www.gassavers.org/garage_images/tikcq1ktypuvjk4y3acz.jpg

I'm curious. Is the Micra carburated?

If so, you might want to look into the Zemco if your current setup does not work.